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Pro trader tools. Free.

The calculators most sites hide behind a paywall — open, instant, no signup. Risk and math only; never advice.

Risk & sizing

Position Size Calculator

How many units to trade so a loss costs exactly what you decided.

Risk/Reward Calculator

Your reward-to-risk ratio and the break-even win rate.

Drawdown Recovery Calculator

The brutal math: the gain needed to recover a loss.

Risk of Ruin Calculator

Monte-Carlo odds your edge survives.

Prop-Firm Challenge Calculator

Can the math pass — and how many losses blow it?

Expectancy Calculator

Your average edge per trade — positive or not.

Effective Leverage Calculator

Your true leverage — and the move that wipes equity.

Lot Size Converter

Standard ↔ mini ↔ micro ↔ units, instantly.

ATR Stop Calculator

Volatility-sized stops from ATR × multiplier.

ADR Position Size Helper

Position size from the average daily range.

Profit Target Calculator

The target your R:R actually implies.

Portfolio Heat Calculator

Total risk across every open position.

Max Open Positions Calculator

How many positions your risk budget allows.

Risk-per-Trade Ladder

Where 20 straight losses actually leaves you.

Drawdown Recovery Time Calculator

How long a drawdown really costs you.

Drawdown Duration Estimator

Trades and months to dig out of a hole.

Pyramiding Calculator

What adding to winners does to your average entry.

Costs

Pip Value Calculator

What one pip is worth on your position.

Profit / Loss Calculator

P&L on a trade, long or short.

Spread Cost Calculator

What the spread really costs you per trade.

Margin Calculator

The margin a position locks up, from lots and leverage.

Commission Break-Even Calculator

How far price must move before you're at zero.

Trading Cost Calculator

What frequency really costs you per year.

Performance

Break-Even Win Rate Calculator

The win rate you need just to break even — costs included.

Profit Factor Calculator

Gross profit ÷ gross loss, honestly framed.

Sharpe Ratio Calculator

Risk-adjusted return of your sample — with honest caveats.

Sortino Ratio Calculator

Sharpe's cousin that only punishes downside.

CAGR Calculator

Annualized growth — and why short samples lie.

R-Multiple Calculator

Every trade measured in units of initial risk.

SQN Calculator (Van Tharp)

Van Tharp's SQN — a grade for your sample, not a promise.

Probability & streaks

Losing Streak Probability Calculator

Long losing streaks are normal — see the odds.

Expected Consecutive Losses Calculator

The worst streak you should EXPECT, not fear.

Win/Loss Streak Simulator

Pure randomness produces uglier streaks than you think.

Martingale Calculator (Danger Demo)

Why doubling-down math destroys accounts.

Growth

Compounding Calculator

Hypothetical growth — illustrative math, not a forecast.

Equity Goal Reverse Calculator

What your goal mathematically demands.

Educational tools only — not financial advice. Verify all figures with your broker.

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